Tamping or ballasting machine



July 7, 1931. c. JACKSON TAMIING OR BALLASTING MACHINE Filed Aug. 22, 1930 Patented July 7, 1931 r ATENT' OFFICE/7 conwitnmoxson, or CHICAGO, rumors TAM ING on BALLAs'rING'iuAC-HINE Application filed August 22, 1930. Serial N0.'476,992.

My present invention relates to tamping or ballasting machines of the type shown-in Letters Patent-No. 1,556,601 issued tome October 13, 1925' The main objectof this invention is to provide an improved tool or tamper and mounting therefor which increases the effectiveness of themachine. v I A further object is to provide a structure W having these advantagesin which the inclividual tools are very strong and durable, although economical to produce, and may be quickly-mounted or repla'cedas occasion requires. c v

' Objects pertaining to details and economics of my. invention will definitely'appear from the description .tofollow. The invention is defined in the claims. f

A structure which embodies the features of myinvention is clearly illustrated in the accompanying drawings, in which:

Fig. 1 is a fragmentary elevation of the crosshead or drop hammer with a series of tools mounted thereon.

Fig. 2 is a fragmentary end elevation, the

drop hammer being shown'in partially elevated position by full lines and in actuated position by dotted lines and a pair of ties being shown to further illustrate the opera- 36 tion of the machine.

Fig. 3 is a fragmentary view partially in vertical section illustrating the adjustable stop feature.

Referring to the drawings, the drop hammer 1 is mounted on a supporting body, preferably a truck adapted to travel on a railway track, for vertical reciprocating movement. The mounting for the drop hammer and means for actuating it are not illustrated in this application as they form no part of my present invention, but the mounting and operating means illustrated in my said Patent No. 1,556,604 will be found very satisfactory.

7 The crosshead is provided with depend ing ears 2 carrying the horizontal pivot 8. Pairs of tool head members 4 are provided having knuckles orpivot members 5 engaged with the supporting pivot 3. The head mem- 'bers have seats 6 intheir faces undercut at their upper ends at 7 to receive the beveled upper ends of the tool shanks 8. The tools 9 are shouldered at 10 to engage the lower edges of the head members and are clamped in their seats by bolts 11.

This provides a very secure connection for the tools to the head members and the shock on. the tools is sustained by the engagement of p tools in their seats.

The tips 12 of the tools are curvedoutwardlyand the front edges have reverse curves providing enlargements 13 at the base of the shanks. The rear sides of the tools are also curved at the lower ends thereof, not only resulting in the curved tip but also providing a surface which tends to spread the tools as they move downwardly, carrying thedirt under adjacent ties 14 as illustrated in Fig. 2. The shoulders resulting from the enlarge-j ments 13 present a surfacewhich is very effective in moving the-dirt laterally.

I preferably provide; an adjustable stop I for limiting the inward swing of the tool head members. This stop is in the form of a screw 15 threaded through one of the head members to enact with the other. A look nut 16 is providedfor retaining the screw in its I adjusted position.

The toolsmay be formed ascastings or drop forgings, are very securely mounted so that they are not likely to be broken, even under severe usage, and are very-efficient in that; the ballast is quickly tamped under apair of adjacent ties, the machinelbeing moved along the'track to properly position the drop-hammen. 1

Having thus describedrmy invention 'what I claim as new and desire to secure :byLetters Patentis: f Y

1. In a track working machine, thecombi: nation with a drop hammer havingdepend ing, pivot cars, a pivot carried thereby, tool head members arranged in opposed pairs and 5 having alternately disposed knuckle pmeme bers; engaged with: said pivot, said tool head members having spaced tool seat-s in their outer faces, said seats being undercut at their upper ends, tools having shank portions arranged in said seats and recesses in their inner sides engaging the lower edges of the head members, bolts for clamping said tools in said seats, and an adjustable stop carried by one head member to coact with the other for limiting the inward swing of the head members.

2. In a track working machine, the combination with a drop hammer having depending pivot ears, a pivot carried thereby, tool head members arranged in opposed pairs and having alternately disposed knuckle members engaged with said pivot, said tool head members having spaced tool seats in their outer faces, said seats being undercut at their upper ends, tools having shank portions arranged in said. seats and recesses in their inner sides eng ging the lower edges of the head members, and bolts for clamping said tools in said seats.

3. In a track working machine, the combination with a drop hammer having depending pivot ears, a pivot carried thereby, tool head members arranged in opposed pairs and having alternately disposed knuckle members engaged with said pivot, said tool head members having spaced tool in their outer faces, said seats being undercutat their upper ends, tools having shank portions arranged in said seats and recesses in their inner sides engaging the lower edges of the head members, and bolts for clamping said tools in said seats, said tools being arranged in opposed pairs on said head members and having outwardly curved tips, the faces of said tools being curved outwardly above said outwardly curved tips.

4. In a track working machine, the combination with a drop hammer, of tool head members pivotally mounted thereon in oppositely facing pairs, said head members having tool seats in their faces, and tools mounted in said seats and having shoulders on their rear sides engaging the edges of said head members, the front faces of said tools being reversely curved, the lower portions of their rear sides being forwardly curved providing forwardly directed tips with enlargements on the faces of the tools above the forwardly curved tips.

5. In a track working machine, the combination with a drop hammer, of tool head members pivotally mounted thereon in oppositely facing pairs, said head members having tool seats in their faces, and tools mounted in said seats and having shoulders on their rear sides engaging the edges of said head members.

6. In a track working machine, the combination with a drop hammer, of tool head members pivotally mounted thereon in opposi e y fac pa r n to l mo nted n id head members, the front faces of said tools being reversely curved, the lower portions of their rear sides being forwardly curved pro viding forwardly directed curved tips with enlargements on the faces of the tools above the forwardly curved tips.

7.' In a track working machine, the combination with a drop hammer, of tools pivotally mounted on said drop hammer in oppositely disposed pairs, the tips of the tools being forwardly directed and their faces being reversely curved.

8. In a track working machine, the combination of a drop hammer, tool head members pivotally mounted thereon in oppositely facing pairs, an adjustable stop carried by one head member and coacting with the other for limiting the inward swing of the head members, and tools mounted on said head members and having outwardly directed tips.

9. In a track working machine, the com bination with a drop hammer, of tool head members pivotally mounted therein in oppositely facing pairs, and tools mounted on said head members, the tools having outward- 1y projecting curved tips and curved enlargements on their faces above said tips.

10. In a track working machine, the combination of a drop hammer, and tools pivotally mounted on said hammer in oppositely facing pairs, said tools being tapered downwardly and having outwardly curved tips.

In witness whereof I have hereunto set my hand.

CORIVILL JACKSON.

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